Longitudinal Study of Generations, California, 1971, 1985, 1988, 1991, 1994, 1997, 2000, 2005

The Longitudinal Study of Generations (LSOG), initiated in 1971, began as a survey of intergenerational relations among 300 three-generation California families with grandparents (then in their sixties), middle-aged parents (then in their early forties), and grandchildren (then aged 15 to 26). The study broadened in 1991 and now includes a fourth generation, the great-grandchildren of these same families. The LSOG, with a fully elaborated generation-sequential design, allows comparisons of sets of aging parents and children at the same stage of life but during different historical periods. These comparisons make possible the investigation of the effects of social change on inter-generational solidarity or conflict across 35 years and four generations, as well as the effects of social change on the ability of families to buffer stressful life transitions (e.g., aging, divorce and remarriage, higher female labor force participation, changes in work and the economy, and possible weakening of family norms of obligation), and the effects of social change on the transmission of values, resources, and behaviors across generations. The LSOG contains information on family structure, household composition, affectual solidarity and conflict, values, attitudes, behaviors, role importance, marital relationships, health and fitness, mental health and well-being, caregiving, leisure activities, and life events and concerns. Demographic variables include age, sex, income, employment status, marital status, socioeconomic history, education, religion, ethnicity, and military service. The codebook for dataset 1 (DS1 Waves 1-7) is over 5000 pages long; due to complications related to the size of this document, the search function within the PDF is not yet enabled. Users seeking specific variables should use the search function within the PI Codebook, or search using the variables search tab/option from the study page.

世代纵向研究（Longitudinal Study of Generations, LSOG）于1971年启动，最初针对300个加州三代家庭开展代际关系调查，受访家庭涵盖当时60多岁的祖父母、40岁出头的中年父母，以及15至26岁的孙辈。
该研究于1991年进行拓展，目前已纳入上述家庭的第四代——曾孙辈。
LSOG采用了精心设计的世代序列设计（generation-sequential design），能够对处于同一人生阶段但身处不同历史时期的衰老父母与子女群体开展比较分析。通过此类比较，该研究可探究35年间跨越四代的社会变迁对代际团结或冲突的影响，同时可分析社会变迁对家庭缓冲压力性生活转型（如衰老、离婚与再婚、女性劳动参与率提升、工作与经济环境变化，以及家庭义务规范可能弱化）的能力所产生的作用，以及社会变迁对代际间价值观、资源与行为传承的影响。
LSOG收录了丰富的家庭相关信息，涵盖家庭结构、家庭构成、情感联结与冲突、价值观、态度、行为、角色重要性认知、婚姻关系、健康与体能状况、心理健康与幸福感、照护活动、休闲活动，以及人生事件与关切事项。其人口统计学变量包括年龄、性别、收入、就业状况、婚姻状况、社会经济史、受教育程度、宗教信仰、种族族裔以及兵役情况。
数据集1（DS1 第1-7波次）的代码本长达5000余页；受文档体量过大带来的技术限制，该PDF内置的搜索功能暂未启用。若用户需检索特定变量，可通过项目负责人代码本（PI Codebook）内的搜索功能，或研究页面中的变量搜索标签/选项进行查询。